Circuit board printing device

Abstract

The present invention discloses a circuit board printing device, which relates to the field related to circuit board printing, and aims to solve the problem in the prior art that heat escapes during the drying process, the heat is not concentrated in the printing part, and the drying time is long. A first drying device is installed in the middle of the rear end of the upper end surface of the workbench, and a second drying device is installed in the middle of the front end of the upper end surface of the workbench. The first drying device and the second drying device are connected to the workbench through a sliding bar, and the first drying device and the second drying device are embedded in the interior of the workbench. The first drying device and the second drying device each include an outer frame, a placement slot, a connecting telescopic rod, a drying plate, a moving slot, a drying area, a drying device support plate, and a pressure spring.

Description

Technical Field

[0001] The invention relates to the field related to circuit board printing, and in particular to a circuit board printing device. Background Art

[0002] Usually, the conductive pattern made of printed circuits, printed components or a combination of the two on the insulating material according to a predetermined design is called a printed circuit. The conductive pattern that provides electrical connection between components on the insulating substrate is called a printed circuit. In this way, the finished board of the printed circuit or printed circuit is called a printed circuit board, also known as a printed board or printed circuit board. The ink printing in the production process of printed circuit boards can be divided into photosensitive circuit ink printing, solder mask ink and character ink printing. Among them, photosensitive circuit ink printing is full-page printing, and there is no requirement for graphic alignment. Therefore, the screen printer suitable for photosensitive circuit ink printing only needs to be equipped with positioning pins to achieve rapid batch printing of ink; while solder mask ink and character ink printing belong to graphic printing, the screen printer used must have a light source alignment system and a platform precision adjustment system to meet the process requirements.

[0003] However, most of the existing printing devices use a drying method that provides heating rods or other related structures inside the box for heating. However, the heat in this method is distributed throughout the entire space, rather than concentrating on drying the printed part, resulting in a long drying time after printing. Therefore, the market urgently needs to develop a circuit board printing device to help people solve the existing problems. Summary of the invention

[0004] The object of the present invention is to provide a circuit board printing device to solve the problem in the above background technology that heat escapes during the drying process and the heat is not concentrated in the printing part, resulting in a long drying time.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a circuit board printing device comprises a workbench, a first drying device is installed in the middle of the rear end of the upper end surface of the workbench, a second drying device is installed in the middle of the front end of the upper end surface of the workbench, and the first drying device and the second drying device are connected to the workbench through a slide bar, and the first drying device and the second drying device are embedded in the interior of the workbench, and the first drying device and the second drying device each comprise an outer frame, a placement groove, a connecting telescopic rod, a drying plate, a moving groove, a drying area, a drying device support plate and a pressure spring, the placement groove is located in the middle of the outer frame, the connecting telescopic rod is located on both sides of the interior, and the connecting telescopic rod is rotatably connected to the outer frame through a mounting piece, the connecting telescopic rod comprises a rod body and a sleeve, the rod body and the sleeve are connected by threads, a support sheet is arranged on the upper end of the rod body, the drying plate is located on one side of the outer frame, the drying plate is rotatably connected to the outer frame through a rotating shaft, the size of the drying plate is the same as the size of the placement groove, and the drying plate The thickness is less than the depth of the placement groove, the movable groove is located at one end of both sides of the lower end surface of the drying plate, the diameter of the support plate is less than the width of the movable groove, the drying area is located at one end in the middle of the lower end surface of the drying plate, and an electric heating wire is arranged inside the drying area. The drying device support plate is located in the middle of one side of the outer frame, the drying device support plate is rotatably connected to the outer frame through a rotating shaft, the drying device support plate is embedded in the inner part of the outer frame, the pressure spring is located between the outer frame and the drying device support plate, and the pressure spring is connected to the lower end of one side of the drying device support plate, a first notch is arranged on one side of the drying plate on the first drying device, a second notch is arranged on one side of the drying plate on the second drying device, and the second notch is consistent with the first notch, a connecting magnet is arranged in the middle of the lower end surface of the first notch and the middle of the upper end surface of the second notch, the drying plate on the first drying device and the drying plate on the second drying device are connected through the connecting magnet, and the drying area on the first drying device is connected to the drying area on the second drying device.

[0006] Preferably, a movable support plate is arranged in the middle of the upper end of the workbench, a printing jig is arranged at the upper end of the movable support plate, first horizontal teeth are arranged on both sides of the lower end of the printing jig, first rotating members are installed on both sides of the upper end of the movable support plate, and the first rotating member is embedded in the interior of the movable support plate and is rotatably connected to the movable support plate, the first rotating member includes a first rotating tooth and a smooth arc surface, and the first rotating tooth is meshed with the first horizontal tooth, a first motor is installed at the rear end of the first rotating member, second longitudinal teeth are arranged at the front and rear ends of the lower end of the movable support plate, a second rotating member is arranged at the lower end of the second longitudinal tooth, and the second rotating member includes a second rotating tooth, and the second rotating tooth is meshed with the second longitudinal teeth, a second motor is installed on one side of the second rotating member, and the first rotating member, the first horizontal teeth and the first motor are perpendicular to the setting direction of the second rotating member, the second longitudinal teeth and the second motor.

[0007] Preferably, a frame is provided at the upper end of the printing jig, a screen is provided inside the frame, a lower friction pad is provided on the periphery of the upper end surface of the printing jig, an upper friction pad is provided on the periphery of the lower end surface of the frame, and friction patterns are provided on both the upper friction pad and the lower friction pad, and the size of the lower friction pad is the same as that of the upper friction pad.

[0008] Preferably, an outer shell is provided at the upper end of the frame, and the outer shell is connected to the frame through a connecting block, and the frame and the connecting block are fixed by bent bolts, a driving gear is installed in the middle of the outer shell, and driven gears are installed on both sides of the inner shell, a driving belt is installed on the outside of the driven gear and the driving gear, and the driving belt is meshed with the driven gear and the driving gear, a scraper is provided at the lower end of the driving belt, and the scraper is fixed to the driving belt, and a groove is opened in the middle of the lower end surface of the outer shell.

[0009] Preferably, optical alignment cameras are installed at the four corners on the inner side of the lower end of the outer shell, and the optical alignment cameras are arranged on the outer side of the groove.

[0010] Preferably, limiting rods are arranged at the four corners of the outer side of the lower end of the outer shell, and limiting columns are arranged at the lower ends of the limiting rods. The limiting rods and the limiting columns are nested and connected, and the limiting columns are fixed to the workbench.

[0011] Preferably, a limiting groove is provided in the middle of the upper end surface of the printing jig, and alignment points are provided at the four corners of the lower bottom surface of the limiting groove, a printed circuit board is provided inside the limiting groove, and the height of the printed circuit board is greater than the height of the limiting groove.

[0012] Preferably, connecting brackets are provided on both sides of the upper end of the workbench, and the connecting brackets are welded and fixed to the workbench, and an electric telescopic mechanism is installed in the middle of the upper end of the connecting bracket, and the electric telescopic mechanism includes a driving telescopic rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the invention, a first drying device and a second drying device are provided. After printing is completed, the first drying device and the second drying device are lifted. Under the action of the rebound force of the pressure spring, the drying device support plate pops up, the drying plate is pulled open, the connecting telescopic rod is turned out, and the rod body and the sleeve connecting the telescopic rod are extended by the thread until the upper end of the rod body is embedded in the movable groove to support the drying plate. At this time, the first notch of the first drying device and the second notch of the second drying device are matched, and they are connected and fixed by connecting the magnet. At this time, the drying areas of the drying plates on the first drying device and the second drying device are just connected, and no supporting force is applied to the first drying device and the second drying device. Under the action of gravity, the first drying device and the second drying device move downward until the lower end of the drying device support plate contacts the workbench for support. At this time, the connected drying plates on the first drying device and the second drying device are just located at the upper end of the printed circuit board, and the entire drying area is just located at the upper end of the printed circuit board, and the distance is relatively close, so that the printed circuit board is dried in a concentrated effect. The various structures cooperate so that the heat is finally concentrated on the position of the printed circuit board, and the drying efficiency is increased;

[0015] 2. In the invention, when the optical alignment camera detects that there is a slight deviation in the position, the first motor rotates to make the first rotating member rotate relatively, and the first rotating tooth on the first rotating member meshes with the first horizontal tooth on the printing jig, so that the printing jig moves horizontally relative to the movable support plate, and the first rotating tooth on the first rotating member and the first horizontal tooth on the printing jig are smaller, so the value of the horizontal movement of the printing jig relative to the movable support plate is smaller, thereby ensuring the accuracy of the movement, and the second motor drives the second rotating member to rotate in the longitudinal plane, so that the movable support plate has a longitudinal relative movement relative to the upper end surface of the workbench, until the optical alignment camera detects that the center point is aligned with the alignment point on the printing jig, indicating that the position is correct, and then the printed circuit board is placed, which can keep the printed circuit board aligned with the pattern on the silk screen;

[0016] 3. In the invention, after the screen and the frame come into contact with the printed circuit board and the printing jig, the friction between the upper friction pad of the frame and the lower friction pad of the printing jig is greater than that of the plane contact. After the alignment is completed, the screen and the frame move downward to start printing, and the positions of the screen and the frame, the printed circuit board and the printing jig remain relatively still, thereby ensuring the printing accuracy.

[0017] 4. In the invention, the driving gear is located in the middle position, and driven gears are provided at both ends. The driving belt is driven to rotate through the meshing relationship between the driven gear and the driving gear and the driving belt, thereby moving the scraper. Compared with the traditional driving gear and the driven gear on both sides, the driving component of the driving gear is placed in the middle position in the present invention, which can ensure that the weight on both sides is equal, and there will be no situation where one side is heavier and tilted, which can avoid the problem of deviation in printing after optical alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a circuit board printing device of the present invention;

[0019] Figure 2 It is a cross-sectional view taken along line AA of the present invention;

[0020] Figure 3 It is an enlarged view of B of the present invention;

[0021] Figure 4 It is the internal structure diagram of the outer shell of the present invention;

[0022] Figure 5 is an overall structural diagram of a first drying device of the present invention;

[0023] Figure 6 A bottom view of a drying plate of the present invention;

[0024] Figure 7 is an overall structural diagram of a second drying device of the present invention;

[0025] Figure 8 This is a diagram showing the connection relationship between the support plate and the outer frame of the drying device of the present invention.

[0026] In the figure: 1. workbench; 2. connecting bracket; 3. electric telescopic mechanism; 4. driving telescopic rod; 5. outer shell; 6. screen; 7. frame; 8. optical alignment camera; 9. limit rod; 10. limit column; 11. printed circuit board; 12. printing fixture; 13. movable support plate; 14. first drying device; 15. first motor; 16. second motor; 17. limit groove; 18. upper friction pad; 19. lower friction pad; 20. first horizontal tooth; 21. first Rotating member; 22, first rotating tooth; 23, second longitudinal tooth; 24, second rotating member; 25, scraper; 26, driving gear; 27, driven gear; 28, driving belt; 29, second drying device; 30, outer frame; 31, placement groove; 32, slide bar; 33, connecting telescopic rod; 34, drying plate; 35, first notch; 36, movable groove; 37, connecting magnet; 38, drying area; 39, second notch; 40, drying device support plate; 41, pressure spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-8An embodiment of the present invention is as follows: a circuit board printing device comprises a workbench 1, a first drying device 14 is installed in the middle of the rear end of the upper end surface of the workbench 1, a second drying device 29 is installed in the middle of the front end of the upper end surface of the workbench 1, and the first drying device 14 and the second drying device 29 are connected to the workbench 1 through a slide bar 32, and the slide bar 32 can be replaced by the current electric control rail, so that it can be operated automatically, and if it is an electric control rail, the electric control rail needs to be installed forward to reserve space for the placement of a drying device support plate 40, the first drying device 14 and the second drying device 29 are both embedded in the interior of the workbench 1, and are normally hidden, the first drying device 14 and the second drying device 2 9 includes an outer frame 30, a placement slot 31, a connecting telescopic rod 33, a drying plate 34, a movable slot 36, a drying area 38, a drying device support plate 40 and a pressure spring 41, the placement slot 31 is located in the middle of the outer frame 30, the connecting telescopic rod 33 is located on both sides of the inner part, and the connecting telescopic rod 33 is rotatably connected to the outer frame 30 through a mounting member, the connecting telescopic rod 33 includes a rod body and a sleeve, the rod body and the sleeve are connected by threads, and a support sheet is provided on the upper end of the rod body, the drying plate 34 is located on one side of the outer frame 30, the drying plate 34 is rotatably connected to the outer frame 30 through a rotating shaft, the size of the drying plate 34 is the same as the size of the placement slot 31, the thickness of the drying plate 34 is less than the depth of the placement slot 31, and the movable slot 36 is used for the drying area 38. The groove 36 is located at one end of both sides of the lower end surface of the drying plate 34, the diameter of the support sheet is smaller than the width of the movable groove 36, the drying area 38 is located at one end in the middle of the lower end surface of the drying plate 34, and an electric heating wire is arranged inside the drying area 38. The drying device support plate 40 is located in the middle of one side of the outer frame 30, and the drying device support plate 40 is rotatably connected to the outer frame 30 through a rotating shaft. When automatic operation is required, the rotating shaft connecting the drying device support plate 40 and the outer frame 30 and the rotating shaft connecting the drying plate 34 and the outer frame 30 adopt an electrically controlled rotating shaft, so as to realize automatic operation. The drying device support plate 40 is embedded in the inner part of the outer frame 30, and the pressure spring 41 is located between the outer frame 30 and the drying device support plate 40, and the pressure spring 41 is located between the outer frame 30 and the drying device support plate 40. A spring 41 is connected to the lower end of one side of the drying device support plate 40, a first notch 35 is provided on one side of the drying plate 34 of the first drying device 14, a second notch 39 is provided on one side of the drying plate 34 of the second drying device 29, and the second notch 39 is consistent with the first notch 35, and a connecting magnet 37 is provided in the middle of the lower end surface of the first notch 35 and the middle of the upper end surface of the second notch 39. The suction force of the connecting magnet 37 does not need to be too large, and it only plays a connecting role. The drying plate 34 on the first drying device 14 and the drying plate 34 on the second drying device 29 are connected through the connecting magnet 37, and the drying area 38 on the first drying device 14 is connected to the drying area 38 on the second drying device 29.

[0029] Furthermore, a movable support plate 13 is provided in the middle of the upper end of the workbench 1, a printing jig 12 is provided at the upper end of the movable support plate 13, first horizontal teeth 20 are provided on both sides of the lower end of the printing jig 12, first rotating members 21 are installed on both sides of the upper end of the movable support plate 13, and the first rotating member 21 is embedded in the interior of the movable support plate 13 and is rotatably connected to the movable support plate 13, the first rotating member 21 includes a first rotating tooth 22 and a smooth arc surface, the number of teeth of the first rotating tooth 22 determines the maximum rotation distance of the first rotating member 21, and when the maximum rotation distance is exceeded, the first rotating member 21 continues to rotate without affecting the position of the printing jig 12, and the first rotating tooth 22 rotates to When it comes into contact with the movable support plate 13, it cannot continue to rotate downward, and the first rotating tooth 22 is meshed with the first horizontal tooth 20. The first motor 15 is installed at the rear end of the first rotating member 21. Second longitudinal teeth 23 are arranged at the front and rear ends of the lower end of the movable support plate 13. The lower end of the second longitudinal tooth 23 is provided with a second rotating member 24, and the second rotating member 24 includes a second rotating tooth, and the second rotating tooth is meshed with the second longitudinal tooth 23. A second motor 16 is installed on one side of the second rotating member 24. The first rotating member 21, the first horizontal tooth 20 and the first motor 15 are perpendicular to the setting direction of the second rotating member 24, the second longitudinal tooth 23 and the second motor 16.

[0030] The related structure of the alignment adjustment is different from the existing one. Relative adjustment in four directions is achieved through the meshing relationship of the teeth. Although there is no direct connection relationship, after being in place, the meshing relationship of the teeth can ensure that the upper structure will not move accordingly in the horizontal plane, thereby ensuring the alignment effect.

[0031] Furthermore, a frame 7 is provided at the upper end of the printing jig 12, and a screen 6 is provided inside the frame 7. The screen 6 has a larger mesh number and is stretched tightly inside the frame 7. A lower friction pad 19 is provided on the periphery of the upper end surface of the printing jig 12, and an upper friction pad 18 is provided on the periphery of the lower end surface of the frame 7. Both the upper friction pad 18 and the lower friction pad 19 are provided with friction patterns. The size of the lower friction pad 19 is the same as that of the upper friction pad 18. In order to increase the friction force, they do not move relative to each other during registration printing.

[0032] Furthermore, an outer shell 5 is provided at the upper end of the frame 7, and the outer shell 5 is connected to the frame 7 through a connecting block. The frame 7 and the connecting block are fixed by bent bolts, or other fixing methods are also acceptable, as long as they can be disassembled. A driving gear 26 is installed in the middle of the inner part of the outer shell 5, and a servo motor is installed behind the driving gear 26. Driven gears 27 are installed on both sides of the inner part of the outer shell 5, and driving belts 28 are installed on the outside of the driven gear 27 and the driving gear 26, and the driving belt 28 is meshed with the driven gear 27 and the driving gear 26. A scraper 25 is provided at the lower end of the driving belt 28, and the scraper 25 is fixed to the driving belt 28. A groove is opened in the middle of the lower end surface of the outer shell 5.

[0033] Furthermore, optical alignment cameras 8 are installed at the four corners on the inner side of the lower end of the outer shell 5. Directly using the optical alignment cameras 8 available on the market, printing after optical alignment can ensure printing accuracy and printing effect, and the optical alignment cameras 8 are set on the outside of the groove.

[0034] Furthermore, limiting rods 9 are arranged at the four corners of the outer side of the lower end of the outer shell 5 , and limiting columns 10 are arranged at the lower ends of the limiting rods 9 . The limiting rods 9 and the limiting columns 10 are nested and connected, and the limiting columns 10 are fixed to the workbench 1 .

[0035] Furthermore, a limiting groove 17 is provided in the middle of the upper end surface of the printing jig 12 , and alignment points are provided at the four corners of the lower bottom surface of the limiting groove 17 , a printed circuit board 11 is provided inside the limiting groove 17 , and the height of the printed circuit board 11 is greater than the height of the limiting groove 17 .

[0036] Furthermore, connecting brackets 2 are provided on both sides of the upper end of the workbench 1 , and the connecting brackets 2 are welded and fixed to the workbench 1 , and an electric telescopic mechanism 3 is installed in the middle of the upper end of the connecting bracket 2 , and the electric telescopic mechanism 3 includes a driving telescopic rod 4 .

[0037] The first drying device 14 and the second drying device 29 are hidden at the front and rear ends of the workbench 1. A controller can be installed at the front end of the workbench 1, and some components are replaced with electronically controlled components according to the specific implementation method, and the circuit is connected to the control branch of the controller. The circuit connection of each branch is controlled by the controller to control the opening and closing of each component, thereby realizing the automatic control of the device.

[0038] Working principle: When in use, optical alignment is performed through the optical alignment camera 8. When there is a horizontal deviation between the center point direction of the optical alignment camera 8 and the alignment points set at the four corners of the limit groove 17 of the printing jig 12, the rotation of the first motor 15 causes the first rotating member 21 to rotate relatively. Since the first rotating tooth 22 on the first rotating member 21 is engaged with the first horizontal tooth 20 on the printing jig 12, the printing jig 12 is horizontally moved relative to the movable support plate 13, and the first rotating tooth 22 on the first rotating member 21 and the first horizontal tooth 20 on the printing jig 12 are smaller, the printing jig 12 The value of the horizontal movement relative to the movable support plate 13 is small, thereby ensuring the horizontal positioning effect; when there is a longitudinal deviation between the center point direction of the optical alignment camera 8 and the alignment points set at the four corners of the limit groove 17 of the printing fixture 12, the second motor 16 drives the second rotating member 24 to rotate, so that the movable support plate 13 has a longitudinal relative movement relative to the upper end surface of the workbench 1, until the optical alignment camera 8 detects that the center point is aligned with the alignment point on the printing fixture 12, indicating that the position is correct, and then the printed circuit board 11 is placed to keep the position of the printed circuit board 11 aligned with the position of the silk screen 6. Through the operation of the electric telescopic mechanism 3, the driving telescopic rod 4 is extended downward, driving the outer shell 5 downward, so that the screen 6 and the frame 7 are pressed against the position of the printed circuit board 11, and the photosensitive ink or other printing materials are poured into the upper end surface of the screen 6 through the discharge pipe of the external discharge device, driving the motor installed behind the driving gear 26 to rotate the driving belt 28, so that the scraper 25 smoothes the printing material, and waits for a while after printing. After the surface of the printing material is no longer sticky, the electric telescopic mechanism 3 works to drive the telescopic rod 4 to shrink, so that the screen 6 is away from the printed circuit board 11, and the first drying device 14 and the second drying device 29 are lifted. Under the action of the rebound force of the pressure spring 41, the drying device support plate 40 pops up, pulls open the drying plate 34, and rotates the connecting telescopic rod 33. The rod body and the sleeve connected to the telescopic rod 33 are extended by the thread until the upper end of the rod body is embedded in the movable groove 36 to support the drying plate 34 (at this time, the embedded movable groove 36 is connected to the drying plate 34). The drying plates 34 are connected to each other to form a triangular structure, and the gravity of the drying plate 34 presses the connecting telescopic rod 33, thereby stabilizing the connection). In this state, the first notch 35 of the first drying device 14 and the second notch 39 of the second drying device 29 are matched, and are connected and fixed by connecting the magnet 37. At this time, the drying areas 38 of the drying plates 34 on the first drying device 14 and the second drying device 29 are just connected. After that, no supporting force is applied to the first drying device 14 and the second drying device 29. With the action of gravity, the first drying device 14 and the second drying device 29 move downward until the lower end of the drying device support plate 40 contacts the workbench 1 for support. At this time, the connected drying plates 34 on the first drying device 14 and the second drying device 29 are just located at the upper end of the printed circuit board 11, and the entire area of ​​the drying area 38 is just located at the upper end of the printed circuit board 11, and the distance is relatively close, so that the heating heat of the drying area 38 is concentrated on the upper end of the printed circuit board 11, thereby quickly drying.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A circuit board printing device, comprising a workbench (1), characterized in that: A first drying device (14) is installed in the middle of the rear end of the upper end surface of the workbench (1), and a second drying device (29) is installed in the middle of the front end of the upper end surface of the workbench (1), and the first drying device (14) and the second drying device (29) are connected to the workbench (1) through a sliding bar (32), and the first drying device (14) and the second drying device (29) are embedded in the interior of the workbench (1), and the first drying device (14) and the second drying device (29) each include an outer frame (30), a placement groove (31), a connecting telescopic rod (33), a drying plate (34), a movable groove (36), a drying area (38), a drying device support plate (4 0) and a pressure spring (41), the placement groove (31) is located in the middle of the outer frame (30), the connecting telescopic rod (33) is located on both sides of the inner part, and the connecting telescopic rod (33) is rotatably connected to the outer frame (30) through a mounting member, the connecting telescopic rod (33) comprises a rod body and a sleeve, the rod body and the sleeve are connected through a thread, and a support sheet is arranged on the upper end of the rod body, a drying plate (34) is located on one side of the outer frame (30), the drying plate (34) is rotatably connected to the outer frame (30) through a rotating shaft, the size of the drying plate (34) is the same as the size of the placement groove (31), the thickness of the drying plate (34) is less than the depth of the placement groove (31), and the movable groove (36) is located on the drying plate (34) at one end on both sides of the lower end surface, the diameter of the support sheet is smaller than the width of the movable groove (36), the drying area (38) is located at one end in the middle of the lower end surface of the drying plate (34), an electric heating wire is arranged inside the drying area (38), the drying device support plate (40) is located in the middle of one side of the outer frame (30), the drying device support plate (40) and the outer frame (30) are rotatably connected via a rotating shaft, the drying device support plate (40) is embedded in the inner part of the outer frame (30), the pressure spring (41) is located between the outer frame (30) and the drying device support plate (40), and the pressure spring (41) is connected to the lower end of one side of the drying device support plate (40), the first drying device ( 14) A first notch (35) is provided on one side of the upper drying plate (34), a second notch (39) is provided on one side of the upper drying plate (34) of the second drying device (29), and the second notch (39) matches the first notch (35), a connecting magnet (37) is provided in the middle of the lower end surface of the first notch (35) and in the middle of the upper end surface of the second notch (39), the upper drying plate (34) of the first drying device (14) and the upper drying plate (34) of the second drying device (29) are connected via the connecting magnet (37), and the upper drying area (38) of the first drying device (14) and the upper drying area (38) of the second drying device (29) are connected;A movable support plate (13) is arranged in the middle of the upper end of the workbench (1), a printing jig (12) is arranged at the upper end of the movable support plate (13), first horizontal teeth (20) are arranged on both sides of the lower end of the printing jig (12), first rotating members (21) are installed on both sides of the upper end of the movable support plate (13), and the first rotating member (21) is embedded in the interior of the movable support plate (13) and is rotatably connected to the movable support plate (13), the first rotating member (21) includes a first rotating tooth (22) and a smooth arc surface, and the first rotating tooth (22) is meshed with the first horizontal tooth (20), a first motor (15) is installed at the rear end of the first rotating member (21), second longitudinal teeth (23) are arranged at the front and rear ends of the lower end of the movable support plate (13), a second rotating member (24) is arranged at the lower end of the second longitudinal teeth (23), and the second rotating member (24) includes a second rotating tooth, a second The rotating teeth mesh with the second longitudinal teeth (23); a second motor (16) is installed on one side of the second rotating member (24); the first rotating member (21), the first horizontal teeth (20) and the first motor (15) are arranged perpendicular to the arrangement direction of the second rotating member (24), the second longitudinal teeth (23) and the second motor (16); a limiting groove (17) is arranged in the middle of the upper end surface of the printing jig (12); and alignment points are arranged at four corners of the lower bottom surface of the limiting groove (17); a printed circuit board (11) is arranged inside the limiting groove (17); and the height of the printed circuit board (11) is greater than the height of the limiting groove (17); connecting brackets (2) are arranged on both sides of the upper end of the workbench (1), and the connecting brackets (2) are welded and fixed to the workbench (1); an electric telescopic mechanism (3) is installed in the middle of the upper end of the connecting bracket (2); and the electric telescopic mechanism (3) includes a driving telescopic rod (4). ; 2. A circuit board printing device according to claim 1, characterized in that: The upper end of the printing jig (12) is provided with a frame (7), the interior of the frame (7) is provided with a screen (6), the periphery of the upper end surface of the printing jig (12) is provided with a lower friction pad (19), the periphery of the lower end surface of the frame (7) is provided with an upper friction pad (18), and both the upper friction pad (18) and the lower friction pad (19) are provided with friction patterns, and the size of the lower friction pad (19) is the same as that of the upper friction pad (18).

3. A circuit board printing device according to claim 2, characterized in that: An outer shell (5) is provided at the upper end of the frame (7), and the outer shell (5) and the frame (7) are connected via a connecting block, and the frame (7) and the connecting block are fixed via bent bolts. A driving gear (26) is installed in the middle of the outer shell (5), and driven gears (27) are installed on both sides of the inner shell (5). A driving belt (28) is installed outside the driven gear (27) and the driving gear (26), and the driving belt (28) is meshed with the driven gear (27) and the driving gear (26). A scraper (25) is provided at the lower end of the driving belt (28), and the scraper (25) is fixed to the driving belt (28). A groove is provided in the middle of the lower end surface of the outer shell (5).

4. A circuit board printing device according to claim 3, characterized in that: Optical alignment cameras (8) are installed at the four corners on the inner side of the lower end of the outer shell (5), and the optical alignment cameras (8) are arranged on the outer side of the groove.

5. A circuit board printing device according to claim 3, characterized in that: Limiting rods (9) are arranged at four corners on the outer side of the lower end of the outer shell (5), and limiting columns (10) are arranged at the lower ends of the limiting rods (9). The limiting rods (9) and the limiting columns (10) are nested and connected, and the limiting columns (10) are fixed to the workbench (1).

Images